Casing swage



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F. l. DE FOREEST CASING SWAGE Filed Dec.

Oct. 26, 1926.

Patented Qct. 26, 1926.

`i1uia'rran stares insane..

FRED I. DEl FOREEST, OF WINFIELD, KANSAS.

CASING- SWAGQE.

Application filed December 12, 1925. Serial No. 75,026.

rlhis invention relates to a tool for restoring collapsed or heavilydented casings, pipes and tubes to their original Shape with out injurythereto or a weakening thereof.

5 The invention provides a tool, of the character specified which iseasily operable, efcient, and rapid in action and which may be dependedupon to perform the work without impairing or in any manner injuring thel casing or tube operated upon.

While the drawings illustrate a preferred embodiment of the invention itis to be understood that in adapting the means to lmeet specific needsand requirements the design 15 may be varied, and such other changes inthe minor details of construction may be resorted to within the scope ofthe invention as claimed, without departing from the spirit thereof.

For a full understanding of the invention and the merits thereof,reference is to be had to the following description and the drawingshereto attached, in which,-

Figure l is a side view of a tool embodyf ing the invention showing thesame applied,

a length of well casing being shown in seotion and a portion thereofcollapsed to demonstrate the application of the tool.

Figure 2 is an elevational view of the tool as seen from the workingface, and

Figures 3, 4 and 5 are detail sectional views on the line 33, 4 4 and5--5, respectively, `of Figure 2.

Corresponding and like parts are referred to in the lfollowingdescription and designated in the several views of the drawings by likereference characters.

The numeral 1 designates a line of'well casing having a portioncollapsed, as indicated at 2, and within the casing is located a toolembodying the invention, the same being disposed above the collapsedportion 2 which, in the operation of thetool, is pressed outwardly andrestored to its original position, as will be readily appreciated.

The tool comprises body and shank portions, the latter being designatedby the numeral 3 and adapted to have a drill jar or other operating partcoupled thereto in any determinate way. The body ofthe tool or swagecomprises an upper cylindrical portion 4 and a tapered end portion 5which has one face in a straight line with the cylindrical portion 4 andthe opposite face inclined, as indicated at 6, the same inclining inthree directions, as indicated-most clearly in Figures l and 2, wherebythe part 5 tapers at the front and opposite sides to form an inclinedworking face having the rear side straight to form a backing forsupporting the tool when in operation. The point of the swage is bluntand broad, as indicated most clearly in Figures 3 and 5, whereby to passin the rear of they collapsed, or dented portion of the casing, or tube,as indicated moet clearly in Figure l, to press the same outwardly andrestore it to its original position. The cylindrical portion 4 of thetool is of a diameter to move freely within the casing, tube, or likepart to be restored to its original shape, the tool being operated by areciprocating movement, whereby the tapered end is forcibly entered inthe rear of the collapsed portion of the casing and presses the sameoutwardly to the position which it. originally occupied. The grooves 7eXtend-helically and provide channels for the passage of fluid when thetool is in action.

It is observed that the swage is preferably of tool steel which istempered or, if preferred, the tool may be case hardened and, in

any event, a tool will be provided for each size of casing, or tube, tobe operated upon. In the operation of the tool it is attached to a drilljar, or other operating part, and is introduced into a line of casing,or other part which has collapsed or beco-me dented and which it isdesired to restore to original shape, and has a reciprocating movementimparted thereto whereby it is gradually advanced and restores themisshapen part to' the original outline, as will be readily understood.

Having thus described the invention, 'l claim:

1. A swage for well casings, tubes, pipes, and the like comprising abody having a cylindrical portion and a tapered portion, the latterhaving a side in line with the cylindrioal portion and having theopposite and opposite and intermediate sides tapered to intermediateside portions tapered. forni a blunt broad point in line with the 2. Aswage for Well casings, tubes, pipes straight side of the tool, saidbody having l0 and the like, comprising a body, having a grooves toprovide passages for the iow of cylindrical end portion and a taperedpora fluid.

tion, the latter having a straight side in line In testimony whereof IatIiX niy signature. with the cylindrical portion; andi-having the lFRED I. `DE FOREEST. [n s]

